I don't think its a question of how many unseen strikes you can survive, but more can you kill the boss before he beserk's? The number of unseen strikes will depend entirely on your raid's damage, the maximum number of strikes would be 16. But you will more than likely be dead before you get anywhere near that, ideally 6/7/8 would be the more realistic number.

You'll never get 16 in 10 man, I just said that was the maximum possible due to the strikes being every 30 seconds and his beserk being 8 minutes. You will more than likely all get 1 shotted around the 10 strike mark depending on cd's.

The strikes come exactly 1 every 1 minute. But you have to take phase 2 in account also which does benefit of enrage (I think, I've never reached it.) Our first kill (which lasted 6:55) had 5 strikes so I'd say 6 is the maximum.

The strikes come exactly 1 every 1 minute. But you have to take phase 2 in account also which does benefit of enrage (I think, I've never reached it.) Our first kill (which lasted 6:55) had 5 strikes so I'd say 6 is the maximum.

This is correct. It's not a 30 second timer. If you're 2 healing (which you honestly should) and pop a raid CD for the 5th one at least, you should absolutely beat the 6th without a problem. Then p2, (spirit shell at 22% is a good idea, you can also chain devo auras WHILE in tornadoes) healing/hybrid cds, don't hit tornadoes and win.